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I have noticed nothing picking at them. They are roughly 6 months new. The only thing I have added to the tank in a while is a couple of leather fragsI picked up @ marine solutions. Other than that I haven't noticed anything unusual. What is strange is it apparently seems to be only affecting half of the colony. It's if they have some sort of bacteria infection or something along those lines??? You got me. But it sucks as they were doing so well.

Any idea's now

"The greatest use of life is to spend it for something that will outlast it." William James

Duffy, I get this pretty often in my tank... Usually one of my colonies will be experiencing that at any given time. I don't know if it has to do with growth or what? Doug has also mentioned seeing it. The good thing about it is that they live through it!

Have you noticed many flatworms in the tank recently? I have seen zoos look like that several times when there was a sudden rise in flatworm populations. My guess its a reaction to the juice flatworms let off, but thats just a guess.

Hey duffy, Move the shrooms away from the Zoo's. They combat eachother with chemicals. The Shroom will win every time too.
Thats more than likely the cause of your problems. The ones a little further away from the red shrooms are more than likely down current from them and are catching all the crap triggered to release by the ones up close that are actualy right next to it and under it. There by not effecting them at all but thier neighbors, and constantly creating a chemical battle.
I had this problem once before. I switched the current up in my tank and moved to polyps and shrooms. Then all was good again.
If you move them and they still look like that, I would check your PH, ALK, salenity and all other water parameters.

Beans, beans, the magical friut. The more you eat the more you toot. The more you toot the better you feal, so eat your beans at every meal!
Remember this!
No matter where you go, there you are!

I've had this happen as well in the past. I recently found a single sundial snail in my tank near an affected colony while the lights were on. I pulled it out and the colony has made a partial recovery. This was only a couple of weeks ago so I can't state that the snail was definately my problem, but so far so good. I just hope there aren't any more snails. I'd say check them out with a flashlight after lights out.